![Power Amplifier Buying Guide](https://ranky10.com/wp-content/uploads/Power-Amplifier-Buying-Guide-570x350.jpg)
Why do you need an amplifier? A power amplifier is needed to increase the voltage, current, or power of a signal. You need an amplifier when your source maximum output as laptop, smartphone or others do not reach the required level. Measured in watts, poweramp contributes power to the signal. […]